Industrial Catalog

Reaming Recommendations

Recommended Stock Removal

Reamer Diameter

Removal

• Consider the hardness of the workpiece and the machinability of the material when setting machine speed. • Feed rate greatly influences reamer life and hole finish quality. Improper feed rates can cause excessive tool wear and inadequate hole finish. • Slow cutting speeds and increase feeds to eliminate chatter. • Stock removal on roughing operations should not exceed 2% - 4% of tool diameter. • Stock removal recommendations on finishing operations are .002 - .004. • Use a left hand spiral fluted reamer with negative shear action for best results in brass, cast iron and some plastics. This type of reamer helps prevent chips from working back into the spiral flutes and scoring the hole. • Use constant-flow coolants in all reaming operations. Soluble oil is effective for most metals; however, sulfur-base oils are recommended for stainless and certain alloy steels. Lard oil and kerosene improve the finish on aluminum.

(Inches) Up to 1/16 ............................................ .003 - .005 1/16 - 1/8.............................................. .004 - .008 1/8 - 1/4................................................ .006 - .012 1/4 - 3/8................................................ .008 - .014 3/8 - 1/2................................................ .010 - .015 1/2 - 3/4................................................ .012 - .018

Recommended Feeds

Material Feed (IPR) Cast Iron & Malleable Iron .................... .005 - .010 Non-Ferrous Materials.......................... .005 - .012 Steel RC50 or higher ................................. .002 - .004 RC30 - RC50.................................... .004 - .008

Recommended Speeds

Material

Speed (SFM)

Cast Iron & Malleable Iron .................... 0 - 85 Non-Ferrous Materials.......................... 90 - 175 Steel RC60 or higher ................................. 8 - 20 RC50 - RC60.................................... 15 - 30 RC40 - RC50.................................... 20 - 40 RC30 - RC40.................................... 35 - 65 Under RC30...................................... 60 - 90 Lubricant Cast Iron & Malleable Iron .................... Soluble oil Water Non-Ferrous Materials.......................... Soluble oil Water Steel RC50 and up .................................... Light oil Uncer RC50...................................... Light oil Soluble oil Water Recommended Lubricants Material

Reaming Recommendations

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